Signaling system.



H. O. RUGH.

SIGNALING SYSTEM.

APPLIUATION FILED JUNE' zo, 1908,

92'?,62 Patented July 13, 1909.

STATES DATEN T OIFIHTOE.

HARRY O. RUGH, OF SANDWICH, ILLINOIS, ASSIGNOR TO SANDWICH ELECTRICCOMPANY, OF SANDWICH, ILLINOIS, A CORPORATION Ol ILLINOIS.

SIGNALING SYSTEM.

no. senses.

To all whom lmay concern.'

Re it known that i, HARRY O. Roon, citizen of the United States,residing at Sandwich, in the county of Dekalb and State ot illinois,have invented a certain new and useful Improvement in Signaling Systems,ot' which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this specication.

y My invention relates to signaling systems, and has for its object, theprovision of an improved selector system which is applicable moreparticularly in the operation of railway telegraph and signalingcircuits.

-The advantages of my invention will be more particularly set toi-th inconnection with the embodiment thereof shown in the accompanyingdrawing, in connection with which I will new describe my invention.

Figure l shows my system diagrammatically, and Fig. 2 shows a detail ofthe selector mechanism. I have for the purposes ot illustration shownthree stations A, B, and C, A being the sending station for one ot thesystems, and B and C the receiving stations. A line wire l unites all ofthe stations, ending at station A in a switch 2, adapted for connectingsaid line wire i with either of the batteries 3 oi' 4, so that eitherpositive or i-iegative battery impulses may be projected over said linewire l to ground. The other end of said line wire l is likewisegrounded. A key 5 is provided to send positive battery impulses over theline wire l when the switch 2 is in its proper position, the normallposition of switch 2 being to connect the line wire l to negativebattery 4. A telegraph relay G is connected with its associate key 7,and the short circuit key 8 is inserted in the line wire l at thevarious stations B, C, whose number may be increased, ot course, ifdesired. The switch 2 is normally in such position that for telegraphicpurposes negative battery current is permanently connected to the letthand end oit line wire l. l/Vhen key 5 is depressed, however, ositivebattery impulses can be sent over ine wire l, as clearly indicated. Thiskey 5 is used for callin@ the various stations B and C independently ofthe telegraph instruments, and calling of these stations B and C isaccomplished by sending positive battery impulses over said line wire l,which positive impulses pass through a l Specification of LettersPatent.

Application filed June 26, 1

Patented July 13, 1909.

Serial No. 1.1.10,570.

relay l0 and which actuates its floating armature ll in such a. way asto send impulses from the battery l2 through (he relay 13, which relay,therefore, actuates the stepby-step mechanism 14 until it is in such aposition that the arm l5 makes contact with the spring 16, thus to ringthe hell l? through the agency of the time relay 1S and buttery 1S). Thearm l5, of course, is placed depending upon the particular station whichit is desired to call, having different angular positions, so thatvarious positions of the step-by-step mechanism will call the variousstations selected.

rThe action ot the time relay 18 prevents a mere passing contact of thearm 1.5 with the spring 16 in actuating the bell 17. rThus each ot' thestations B and (l may be called from the station by depressing the key5. After the bell has sounded, ot' the particular station desired,switch Q is released and negative battery current again tlows throughline wire l. 'lliis actuates the polarized relay l() in the oppositedirectioi'i, so that current tlows from battery l2, through the relayQO,so that by means of the arm 2l the actuating levers and E23 are releasedto allow the step-by-step mechanism 1.5i to fall back into its normalposition. lVhen it thus falls back into its normal position, it therebyopens the circuit through springs 9.4i, 25, as shown in Fig. 2, therebyopening the circuit through the relay 20. t is very important when thestep-by-stcp mechanism falls back into its normal position, to prevent acontinuous actuation oi the armature ill, on account ot the negativebattery impulses which would bc flowing over the line whenever thetelegraph key 7 ot' either station is actuated. The relay Q() and itsarmature 2l thus constitute what might be called restorer controllingmeans. The release magnet 20 being cut out, however. through the agencyof the stepby-step mechanism il, and the springs '24 and 25, batteryimpulses may be sent over line wire l, through the key 7, and not canseany action of the relay 20, even it' the polarized relay l() responds tothese negative inipulses. coiled spring 9 restores the selectormechanisin 'iii to its normal position, when the magnet 2O operates. Asto 2G is provided, so that the selector mechanism I4 will stop after ithas opened circuit through springs 24 and 25. It' the circuit were notopened through springs 2a and 25, it is apparent that an actuationot thetelegraph key 7 in sending negative battery impulses over the line,would continually operate the magnet 2O through operation of thepolarized relay 10. rllhis operation is naturally very undesirable, andmy improved means above described overcome this diculty to the practicaloperation of telegraph systems on a line such as outlined above. Aspring 2T maintains the armature l1 in a oating position, so that itresponds to either positive or negative impulses.

lVhile l have herein shown and particularly described one embodiment ofmy invention, l do not Wish to limit myself to the precise constructionand arrangement as herein shown, but A l/Vhat l claim as new and desireto secure by Letters Patent is: i

l. A signaling system comprising a line circuit having a central stationand a pluralityvot substations, telegraphic instruments interposed atintervals along said circuit, polarized relays at sub-stationsdistributed along said circuit', a selector mechanism for each polarizedrelay, a signal under the control ot the selector mechanism, restorercontrolling means operable from the central station permitting operationof the selector mechanism to normal after operation, and meansassociated with the selector mechanism when in its normal position forrendering inoperative the selector restorer controlling means.

2. A. signaling system comprising a line circuit having a centralstation and a plurality of sub-stations, telegraphic instrumentsinterposed at intervals along said circuit, polarized relays atsub-stations distributed along said circuit, a selector mechanism foreach polarized relay, a signal under the control ot the selectormechanism, electromagnetic restorer controlling means operable trom thecentral station permitting restoration ot' the selector mechanism to@eases normal after operation, and means associated ivith the selectormechanism When in its normal position for rendering inoperative theselector restorer controlling means.

3. A signaling system comprising a line circuit having a central stationand a plurality of substations, telegraph instruments interposed atintervals along said circuit, relays at substations distributed alongsaid circuit, a selector mechanism for each relay,

a signal under the control of the selector mechanism, a restorercontrolling means operable from the central station permitting operationof the selector mechanism to normal after operation, and meansassociated With theselector mechanism when in its normal position forrendering inoperative the selector restorer controlling means.

4. A signaling system comprising aline circuit having a central stationand a plurality .of substations, telegraphic instruments interposed atintervals along said circuit operated With one character of current,polarized relays at snbstations distributed along said circuit'or signalcalling operation with a diilerent character of current, a selectormechanism for eachy polarized relay, a signal under control of theselector mechanism, restorer controlling means adapted for operationthrough the agency of said polaried relay by the first-mentionedcharacter ot current for restoring the selector mechanism to normalafter operatiomand switching means associated with the selectormechanism When in its normal position for rendering inoperative theselector restorer controlling means.

ln Witness whereof. l hereunto subscribe my name this eighth day ot JuneA. D., 1908.

Y HARRY HUGH.

lllitnesses.

E. ll. CAMPBELL, (l. M. lll/'nnM-nn..

